Re: [PATCH v4 1/1] ASoC: Intel: maxim-common: get codec number from ACPI table

From: Andy Shevchenko
Date: Tue Aug 01 2023 - 09:48:01 EST

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On Mon, Jul 31, 2023 at 06:34:19PM +0800, Brent Lu wrote:
> We implement a helper function to get number of codecs from ACPI
> subsystem instead of using quirk flag in machine driver. Also refactor
> module interface by adding max_98390_dai_link() function.
>
> On the sof_rt5682 machine driver side, we remove the quirk flag
> SOF_MAX98390_TWEETER_SPEAKER_PRESENT and use the new interface of
> max98390 to setup dai link.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
from ACPI utilization point of view.

The long standing issue with the entire ASoC subsystem, though, is the device
instance name in use, which is _strictly speaking_ fragile: The device
enumeration order was never guaranteed as far as I know, it just happened
to work because ACPICA & ACPI glue layer code doesn't change this, but it
very well has a right to.

> Signed-off-by: Brent Lu <brent.lu@xxxxxxxxx>
> ---
> sound/soc/intel/boards/sof_maxim_common.c | 170 +++++++++++++---------
> sound/soc/intel/boards/sof_maxim_common.h | 21 ++-
> sound/soc/intel/boards/sof_rt5682.c | 37 +----
> 3 files changed, 111 insertions(+), 117 deletions(-)
>
> diff --git a/sound/soc/intel/boards/sof_maxim_common.c b/sound/soc/intel/boards/sof_maxim_common.c
> index 112e89951da0..628b6d5d3ee4 100644
> --- a/sound/soc/intel/boards/sof_maxim_common.c
> +++ b/sound/soc/intel/boards/sof_maxim_common.c
> @@ -4,6 +4,7 @@
> #include <linux/module.h>
> #include <linux/string.h>
> #include <sound/pcm.h>
> +#include <sound/pcm_params.h>
> #include <sound/soc.h>
> #include <sound/soc-acpi.h>
> #include <sound/soc-dai.h>
> @@ -11,6 +12,18 @@
> #include <uapi/sound/asound.h>
> #include "sof_maxim_common.h"
>
> +/* helper function to get the number of specific codec */
> +static unsigned int get_num_codecs(const char *hid)
> +{
> + struct acpi_device *adev;
> + unsigned int dev_num = 0;
> +
> + for_each_acpi_dev_match(adev, hid, NULL, -1)
> + dev_num++;
> +
> + return dev_num;
> +}
> +
> #define MAX_98373_PIN_NAME 16
>
> const struct snd_soc_dapm_route max_98373_dapm_routes[] = {
> @@ -168,17 +181,6 @@ static struct snd_soc_codec_conf max_98390_codec_conf[] = {
> .dlc = COMP_CODEC_CONF(MAX_98390_DEV1_NAME),
> .name_prefix = "Left",
> },
> -};
> -
> -static struct snd_soc_codec_conf max_98390_4spk_codec_conf[] = {
> - {
> - .dlc = COMP_CODEC_CONF(MAX_98390_DEV0_NAME),
> - .name_prefix = "Right",
> - },
> - {
> - .dlc = COMP_CODEC_CONF(MAX_98390_DEV1_NAME),
> - .name_prefix = "Left",
> - },
> {
> .dlc = COMP_CODEC_CONF(MAX_98390_DEV2_NAME),
> .name_prefix = "Tweeter Right",
> @@ -189,19 +191,7 @@ static struct snd_soc_codec_conf max_98390_4spk_codec_conf[] = {
> },
> };
>
> -struct snd_soc_dai_link_component max_98390_components[] = {
> - {
> - .name = MAX_98390_DEV0_NAME,
> - .dai_name = MAX_98390_CODEC_DAI,
> - },
> - {
> - .name = MAX_98390_DEV1_NAME,
> - .dai_name = MAX_98390_CODEC_DAI,
> - },
> -};
> -EXPORT_SYMBOL_NS(max_98390_components, SND_SOC_INTEL_SOF_MAXIM_COMMON);
> -
> -struct snd_soc_dai_link_component max_98390_4spk_components[] = {
> +static struct snd_soc_dai_link_component max_98390_components[] = {
> {
> .name = MAX_98390_DEV0_NAME,
> .dai_name = MAX_98390_CODEC_DAI,
> @@ -219,62 +209,56 @@ struct snd_soc_dai_link_component max_98390_4spk_components[] = {
> .dai_name = MAX_98390_CODEC_DAI,
> },
> };
> -EXPORT_SYMBOL_NS(max_98390_4spk_components, SND_SOC_INTEL_SOF_MAXIM_COMMON);
> +
> +static const struct {
> + unsigned int tx;
> + unsigned int rx;
> +} max_98390_tdm_mask[] = {
> + {.tx = 0x01, .rx = 0x3},
> + {.tx = 0x02, .rx = 0x3},
> + {.tx = 0x04, .rx = 0x3},
> + {.tx = 0x08, .rx = 0x3},
> +};
>
> static int max_98390_hw_params(struct snd_pcm_substream *substream,
> struct snd_pcm_hw_params *params)
> {
> struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
> struct snd_soc_dai *codec_dai;
> - int i;
> + int i, ret;
>
> for_each_rtd_codec_dais(rtd, i, codec_dai) {
> - if (i >= ARRAY_SIZE(max_98390_4spk_components)) {
> + if (i >= ARRAY_SIZE(max_98390_tdm_mask)) {
> dev_err(codec_dai->dev, "invalid codec index %d\n", i);
> return -ENODEV;
> }
>
> - if (!strcmp(codec_dai->component->name, MAX_98390_DEV0_NAME)) {
> - /* DEV0 tdm slot configuration Right */
> - snd_soc_dai_set_tdm_slot(codec_dai, 0x01, 3, 4, 32);
> - }
> - if (!strcmp(codec_dai->component->name, MAX_98390_DEV1_NAME)) {
> - /* DEV1 tdm slot configuration Left */
> - snd_soc_dai_set_tdm_slot(codec_dai, 0x02, 3, 4, 32);
> - }
> -
> - if (!strcmp(codec_dai->component->name, MAX_98390_DEV2_NAME)) {
> - /* DEVi2 tdm slot configuration Tweeter Right */
> - snd_soc_dai_set_tdm_slot(codec_dai, 0x04, 3, 4, 32);
> - }
> - if (!strcmp(codec_dai->component->name, MAX_98390_DEV3_NAME)) {
> - /* DEV3 tdm slot configuration Tweeter Left */
> - snd_soc_dai_set_tdm_slot(codec_dai, 0x08, 3, 4, 32);
> + ret = snd_soc_dai_set_tdm_slot(codec_dai, max_98390_tdm_mask[i].tx,
> + max_98390_tdm_mask[i].rx, 4,
> + params_width(params));
> + if (ret < 0) {
> + dev_err(codec_dai->dev, "fail to set tdm slot, ret %d\n",
> + ret);
> + return ret;
> }
> }
> return 0;
> }
>
> -int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd)
> +static int max_98390_init(struct snd_soc_pcm_runtime *rtd)
> {
> struct snd_soc_card *card = rtd->card;
> + unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
> int ret;
>
> - /* add regular speakers dapm route */
> - ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
> - ARRAY_SIZE(max_98390_dapm_routes));
> - if (ret) {
> - dev_err(rtd->dev, "unable to add Left/Right Speaker dapm, ret %d\n", ret);
> - return ret;
> - }
> -
> - /* add widgets/controls/dapm for tweeter speakers */
> - if (acpi_dev_present("MX98390", "3", -1)) {
> + switch (num_codecs) {
> + case 4:
> + /* add widgets/controls/dapm for tweeter speakers */
> ret = snd_soc_dapm_new_controls(&card->dapm, max_98390_tt_dapm_widgets,
> ARRAY_SIZE(max_98390_tt_dapm_widgets));
> -
> if (ret) {
> - dev_err(rtd->dev, "unable to add tweeter dapm controls, ret %d\n", ret);
> + dev_err(rtd->dev, "unable to add tweeter dapm widgets, ret %d\n",
> + ret);
> /* Don't need to add routes if widget addition failed */
> return ret;
> }
> @@ -282,33 +266,79 @@ int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd)
> ret = snd_soc_add_card_controls(card, max_98390_tt_kcontrols,
> ARRAY_SIZE(max_98390_tt_kcontrols));
> if (ret) {
> - dev_err(rtd->dev, "unable to add tweeter card controls, ret %d\n", ret);
> + dev_err(rtd->dev, "unable to add tweeter controls, ret %d\n",
> + ret);
> return ret;
> }
>
> ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_tt_dapm_routes,
> ARRAY_SIZE(max_98390_tt_dapm_routes));
> - if (ret)
> - dev_err(rtd->dev,
> - "unable to add Tweeter Left/Right Speaker dapm, ret %d\n", ret);
> + if (ret) {
> + dev_err(rtd->dev, "unable to add tweeter dapm routes, ret %d\n",
> + ret);
> + return ret;
> + }
> +
> + fallthrough;
> + case 2:
> + /* add regular speakers dapm route */
> + ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
> + ARRAY_SIZE(max_98390_dapm_routes));
> + if (ret) {
> + dev_err(rtd->dev, "unable to add dapm routes, ret %d\n",
> + ret);
> + return ret;
> + }
> + break;
> + default:
> + dev_err(rtd->dev, "invalid codec number %d\n", num_codecs);
> + return -EINVAL;
> }
> +
> return ret;
> }
> -EXPORT_SYMBOL_NS(max_98390_spk_codec_init, SND_SOC_INTEL_SOF_MAXIM_COMMON);
>
> -const struct snd_soc_ops max_98390_ops = {
> +static const struct snd_soc_ops max_98390_ops = {
> .hw_params = max_98390_hw_params,
> };
> -EXPORT_SYMBOL_NS(max_98390_ops, SND_SOC_INTEL_SOF_MAXIM_COMMON);
>
> -void max_98390_set_codec_conf(struct snd_soc_card *card, int ch)
> +void max_98390_dai_link(struct device *dev, struct snd_soc_dai_link *link)
> +{
> + unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
> +
> + link->codecs = max_98390_components;
> +
> + switch (num_codecs) {
> + case 2:
> + case 4:
> + link->num_codecs = num_codecs;
> + break;
> + default:
> + dev_err(dev, "invalid codec number %d for %s\n", num_codecs,
> + MAX_98390_ACPI_HID);
> + break;
> + }
> +
> + link->init = max_98390_init;
> + link->ops = &max_98390_ops;
> +}
> +EXPORT_SYMBOL_NS(max_98390_dai_link, SND_SOC_INTEL_SOF_MAXIM_COMMON);
> +
> +void max_98390_set_codec_conf(struct device *dev, struct snd_soc_card *card)
> {
> - if (ch == ARRAY_SIZE(max_98390_4spk_codec_conf)) {
> - card->codec_conf = max_98390_4spk_codec_conf;
> - card->num_configs = ARRAY_SIZE(max_98390_4spk_codec_conf);
> - } else {
> - card->codec_conf = max_98390_codec_conf;
> - card->num_configs = ARRAY_SIZE(max_98390_codec_conf);
> + unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
> +
> + card->codec_conf = max_98390_codec_conf;
> +
> + switch (num_codecs) {
> + case 2:
> + case 4:
> + card->num_configs = num_codecs;
> + break;
> + default:
> + dev_err(dev, "invalid codec number %d for %s\n", num_codecs,
> + MAX_98390_ACPI_HID);
> + break;
> }
> }
> EXPORT_SYMBOL_NS(max_98390_set_codec_conf, SND_SOC_INTEL_SOF_MAXIM_COMMON);
> diff --git a/sound/soc/intel/boards/sof_maxim_common.h b/sound/soc/intel/boards/sof_maxim_common.h
> index 7a8c53049e4d..a095b47b856b 100644
> --- a/sound/soc/intel/boards/sof_maxim_common.h
> +++ b/sound/soc/intel/boards/sof_maxim_common.h
> @@ -27,18 +27,15 @@ int max_98373_trigger(struct snd_pcm_substream *substream, int cmd);
> /*
> * Maxim MAX98390
> */
> -#define MAX_98390_CODEC_DAI "max98390-aif1"
> -#define MAX_98390_DEV0_NAME "i2c-MX98390:00"
> -#define MAX_98390_DEV1_NAME "i2c-MX98390:01"
> -#define MAX_98390_DEV2_NAME "i2c-MX98390:02"
> -#define MAX_98390_DEV3_NAME "i2c-MX98390:03"
> -
> -extern struct snd_soc_dai_link_component max_98390_components[2];
> -extern struct snd_soc_dai_link_component max_98390_4spk_components[4];
> -extern const struct snd_soc_ops max_98390_ops;
> -
> -void max_98390_set_codec_conf(struct snd_soc_card *card, int ch);
> -int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd);
> +#define MAX_98390_ACPI_HID "MX98390"
> +#define MAX_98390_CODEC_DAI "max98390-aif1"
> +#define MAX_98390_DEV0_NAME "i2c-" MAX_98390_ACPI_HID ":00"
> +#define MAX_98390_DEV1_NAME "i2c-" MAX_98390_ACPI_HID ":01"
> +#define MAX_98390_DEV2_NAME "i2c-" MAX_98390_ACPI_HID ":02"
> +#define MAX_98390_DEV3_NAME "i2c-" MAX_98390_ACPI_HID ":03"
> +
> +void max_98390_dai_link(struct device *dev, struct snd_soc_dai_link *link);
> +void max_98390_set_codec_conf(struct device *dev, struct snd_soc_card *card);
>
> /*
> * Maxim MAX98357A/MAX98360A
> diff --git a/sound/soc/intel/boards/sof_rt5682.c b/sound/soc/intel/boards/sof_rt5682.c
> index b4f07bdcf8b4..0af1e0c3a9db 100644
> --- a/sound/soc/intel/boards/sof_rt5682.c
> +++ b/sound/soc/intel/boards/sof_rt5682.c
> @@ -59,7 +59,6 @@
> #define SOF_SSP_BT_OFFLOAD_PRESENT BIT(22)
> #define SOF_RT5682S_HEADPHONE_CODEC_PRESENT BIT(23)
> #define SOF_MAX98390_SPEAKER_AMP_PRESENT BIT(24)
> -#define SOF_MAX98390_TWEETER_SPEAKER_PRESENT BIT(25)
> #define SOF_RT1019_SPEAKER_AMP_PRESENT BIT(26)
> #define SOF_RT5650_HEADPHONE_CODEC_PRESENT BIT(27)
>
> @@ -195,23 +194,6 @@ static const struct dmi_system_id sof_rt5682_quirk_table[] = {
> SOF_RT5682_SSP_AMP(2) |
> SOF_RT5682_NUM_HDMIDEV(4)),
> },
> - {
> - .callback = sof_rt5682_quirk_cb,
> - .matches = {
> - DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
> - DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98390_ALC5682I_I2S_4SPK"),
> - },
> - .driver_data = (void *)(SOF_RT5682_MCLK_EN |
> - SOF_RT5682_SSP_CODEC(0) |
> - SOF_SPEAKER_AMP_PRESENT |
> - SOF_MAX98390_SPEAKER_AMP_PRESENT |
> - SOF_MAX98390_TWEETER_SPEAKER_PRESENT |
> - SOF_RT5682_SSP_AMP(1) |
> - SOF_RT5682_NUM_HDMIDEV(4) |
> - SOF_BT_OFFLOAD_SSP(2) |
> - SOF_SSP_BT_OFFLOAD_PRESENT),
> -
> - },
> {
> .callback = sof_rt5682_quirk_cb,
> .matches = {
> @@ -850,17 +832,7 @@ static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
> sof_rt1011_dai_link(&links[id]);
> } else if (sof_rt5682_quirk &
> SOF_MAX98390_SPEAKER_AMP_PRESENT) {
> - if (sof_rt5682_quirk &
> - SOF_MAX98390_TWEETER_SPEAKER_PRESENT) {
> - links[id].codecs = max_98390_4spk_components;
> - links[id].num_codecs = ARRAY_SIZE(max_98390_4spk_components);
> - } else {
> - links[id].codecs = max_98390_components;
> - links[id].num_codecs = ARRAY_SIZE(max_98390_components);
> - }
> - links[id].init = max_98390_spk_codec_init;
> - links[id].ops = &max_98390_ops;
> -
> + max_98390_dai_link(dev, &links[id]);
> } else if (sof_rt5682_quirk & SOF_RT5650_HEADPHONE_CODEC_PRESENT) {
> links[id].codecs = &rt5650_components[1];
> links[id].num_codecs = 1;
> @@ -1019,12 +991,7 @@ static int sof_audio_probe(struct platform_device *pdev)
> else if (sof_rt5682_quirk & SOF_RT1015P_SPEAKER_AMP_PRESENT)
> sof_rt1015p_codec_conf(&sof_audio_card_rt5682);
> else if (sof_rt5682_quirk & SOF_MAX98390_SPEAKER_AMP_PRESENT) {
> - if (sof_rt5682_quirk & SOF_MAX98390_TWEETER_SPEAKER_PRESENT)
> - max_98390_set_codec_conf(&sof_audio_card_rt5682,
> - ARRAY_SIZE(max_98390_4spk_components));
> - else
> - max_98390_set_codec_conf(&sof_audio_card_rt5682,
> - ARRAY_SIZE(max_98390_components));
> + max_98390_set_codec_conf(&pdev->dev, &sof_audio_card_rt5682);
> }
>
> if (sof_rt5682_quirk & SOF_SSP_BT_OFFLOAD_PRESENT)
> --
> 2.34.1
>

--
With Best Regards,
Andy Shevchenko

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